美樹克彦
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 25
followers: 658
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e8e930e8ed6e296283be5d62180682d72c6625f7d04bf2a6727ea60958b4edf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/843d0c55-557d-46cc-834a-f18440b6cadd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/843d0c55-557d-46cc-834a-f18440b6cadd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/843d0c55-557d-46cc-834a-f18440b6cadd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8e8e930e8ed6e296283be5d62180682d72c6625f7d04bf2a6727ea60958b4edf","name":"美樹克彦","registered_at":"2026-06-12T03:20:52Z","symbol":"NIM0171307","token_address":"0x236d8a854a56a5112192349605f5621ed5cb5a85","type":"artist","uuid":"843d0c55-557d-46cc-834a-f18440b6cadd"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8e930e8ed6e296283be5d62180682d72c6625f7d04bf2a6727ea60958b4edf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/843d0c55-557d-46cc-834a-f18440b6cadd.json and https://artists.proofprofile.net/proofs/artist/843d0c55-557d-46cc-834a-f18440b6cadd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x8e8e930e8ed6e296283be5d62180682d72c6625f7d04bf2a6727ea60958b4edf","name":"美樹克彦","registered_at":"2026-06-12T03:20:52Z","symbol":"NIM0171307","token_address":"0x236d8a854a56a5112192349605f5621ed5cb5a85","type":"artist","uuid":"843d0c55-557d-46cc-834a-f18440b6cadd"}
album: 日本クラウン創立55周年記念企画 「花はおそかった」美樹克彦ベスト
  type: MusicAlbum
  date published: 2018-01-10
  track: 花はおそかった
    type: MusicRecording
    duration: PT3M31S
    duration ms: 211986
    explicit: false
    by artist: 美樹克彦
    in album: 日本クラウン創立55周年記念企画 「花はおそかった」美樹克彦ベスト
      type: MusicAlbum
      date published: 2018-01-10
    genre: enka
    genre: kayokyoku
    isrc code: JPCR06600770
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T02:13:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8c0c952faa8a5bde68c6449a48ce40002029b1201efbbb3c99e57fbd613445a5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCR06600770
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0c952faa8a5bde68c6449a48ce40002029b1201efbbb3c99e57fbd613445a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCR06600770 — a six-check JSON result.
      date published: 2026-07-05T10:01:46Z
    audio: 花はおそかった
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 71.168
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.391
      additional property: Energy
        type: PropertyValue
        value: 0.394
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.72
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.088
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.324
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.084
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 有名作曲家の歌謡教室 vol.10 カラオケ免許皆伝
  type: MusicAlbum
  date published: 2021-09-01